Actually, let's use single digits for these otherwise they'll actually be…

Actually, let's use single digits for these otherwise they'll actually be printed in scientific notation with a '.', defeating the purpose of the test.

c++/src/capnp/encoding-test.c++

@@ -1709,9 +1709,9 @@ TEST(Encoding, WholeFloatDefault) {
   auto root = message.initRoot<test::TestWholeFloatDefault>();
 
   EXPECT_EQ(123.0f, root.getField());
-  EXPECT_EQ(123e30f, root.getBigField());
+  EXPECT_EQ(2e30f, root.getBigField());
   EXPECT_EQ(456.0f, test::TestWholeFloatDefault::CONSTANT);
-  EXPECT_EQ(456e30f, test::TestWholeFloatDefault::BIG_CONSTANT);
+  EXPECT_EQ(4e30f, test::TestWholeFloatDefault::BIG_CONSTANT);
 }
 
 }  // namespace

c++/src/capnp/test.capnp

@@ -498,9 +498,9 @@ struct TestWholeFloatDefault {
   # At one point, these failed to compile in C++ because it would produce literals like "123f",
   # which is not valid; it needs to be "123.0f".
   field @0 :Float32 = 123;
-  bigField @1 :Float32 = 123e30;
+  bigField @1 :Float32 = 2e30;
   const constant :Float32 = 456;
-  const bigConstant :Float32 = 456e30;
+  const bigConstant :Float32 = 4e30;
 }
 
 struct TestEmptyStruct {}